Slip-on jacket for molds



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SLIP-ON JACKET FOR MOLDS "I I Filed Nov. 29, 1947 2 Shets-Sheet 1 3.1-3 I[ I I ififls I /a P; I I1 III I I U U I I I I I I I I I I I I I I 4 m I 4 l w I I I I I I I I i I I i //0 m 1 I I I I I If] 5?" b: 10 g: 1?Q- E:

zlNVENTOR. Z/ M. w finke Patented May 31, 1949 UNITED STATES PATENT OFFICE SLIP-N JACKET FOR MOLDS Andrew B. Henkel, Rochester, N. Y.

Application November 29, 1947, Serial No. 788,828

4 Claims. 1

This invention relates to molding apparatus and, more particularly, to slip-on jackets for mold bodies of sand or like materials, one object of the invention being to provide an improved jacket of this nature having a more simple, practical and eificient type of construction.

Another object is the provision of such a jacket comprising plates and a ring for pressing the plates against the mold sides and having a construction adapted to be readily assembled and easily and conveniently manipulated in use.

A further object is to provide a jacket of the above character so constructed that its parts may be collapsed substantially into a plane for more convenient transportation and storage in quantities.

A still further object is to provide such a jacket comprising few parts of simple construction, capable of being manufactured and assembled at relatively low cost.

To these and other ends the invention resides in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features bein pointed out in the claims at the end of the specification.

In the drawings:

Fig. 1 is a top plan view of a jacket embodying the present invention and showing the same applied to a mold;

Fig. 2 is a side elevation of the same;

Fig. 3 is a side elevation of the mold plates, partly in section and partly broken away, and showing the same collapsed into a plane for transportation and storage;

Fig. 4 is a sectional elevation on the line 4-4 in Fi 1;

Fig. 5 is a view similar to Fig. 4, but showing the plates extended and separated by the clamping ring, as in application to and removal from the mold;

Fig. 6 is an enlarged sectional view on the line 6-43 in Fig. 1, showing means for pivotally connecting the plates, and

Fig. 7 is a top plan view of pintle means for pivotally connecting the plates.

The preferred embodiment of the invention, herein disclosed, by way of illustration, comprises a set of four plates I'll, each of generally rectangular shape and suitably dimensioned to cover the sides, respectively, of the mold body I I with which they are to be used. Each plate has a fiat inner surface l2 for supporting engagement with a side of the mold and each end of each plate adjacent its top is formed with a cylindrical socket 13 extending inwardly thereof parallel with the opposite side faces and top edge of the plate, as shown. The sockets receive the ends of L-shaped connectors or pintle means, such as rods, I! (Fig. 7), each connecting the adjacent plate ends at each corner of the jacket, as shown. Each end of the pintle rod is formed with a portion l5 of reduced diameter for receiving the inner end of a screw it threadedly inserted through the upper edge of the plate. The reduced portion i5 is sufficiently long to provide some longitudinal play for the end of the pintle in its socket, for a purpose hereafter described, while the screw serves to hold the pintle against inadvertent detachment from the plate. It is evident from this feature that the pintles provide a hinged or pivotal connection between the adjacent plate ends at each corner, by means of which each plate has a swinging movement and also a small movement toward and from the mold body.

Each plate is formed along the outer side of its top edge with downwardly and outwardly inclined portions ll, which are preferably continuous with the length of the plate in the form of a flange having a curved under surface l8. In case the plates are to be used with a mold body having vertical or untapered sides, each plate is formed also with a downwardly and outwardly inclined surface or wedge strip l9 making an angle with the vertical of, say, 3 or more. In the present instance, two such wedge strips are provided in spaced relation on each plate, but in case the jacket is to be employed with a mold body having sides inclined or tapered downwardly and outwardly at an angle of, say 3 or more, the wedge strips [9 may be omitted, since such inclined shape of the mold will impart a suflicient inclination to the plates for wedging them against the mold, as hereafter described.

Means are provided for operating the above described plates comprisin a rectangular ring 20, which may be solid or hollow in construction. and is preferably circular in cross section, as shown, although such shape obviously may be varied. The ring is applied to embrace the four plates, as shown, and serves, when moved vertically downwardly, to act upon the downwardly and outwardly inclined plates or the wedge strips 19 when provided for use with straight sided molds. These plates are preferably so dimensioned that ring 20 clamps the plates firmly against the mold sides when the ring is in a position slightly below the upper half of the plates, as shown in Fi 4. The plates are provided, preferably on the lower ends of the wedge strips IS, with lugs 2! for preventing movement of the ring off the lower ends of the plates while removed from the mold.

A further advantageous feature is that the parts are so constructed and arranged that they may be collapsed into a substantially flat condition, for economy of space in transportation and storage. This disposition of the parts is accomplished by partly withdrawing the screw [6 to freethe spindles H for further extension from their sockets, after which the bottoms of the plates are swung outwardly, as shown in Fig. 3, with the result that the plates are laid flat so as to rest on their mold supporting surfaces. In this position, ring 20 may either remain loosely on the plates adjacent the flanges II, or be removed as shown in Fig. 3 for separate disposition. To restore the parts in condition for use, the ring is applied to embrace the plates which are swung vertically and secured in condition for use by pressing the spindles [4 back in their sockets far enough to allow the screw Hi to be advanced into retaining engagement with the reduced portions l5 thereof.

It is evident from the above description that my jacket comprises but few parts of relatively simple formation capable of being readily manufactured and easily and conveniently manipulated in assembly and use. The plate flanges I1 are preferably so shaped and dimensioned, as shown, as to rest at their upwardly and inwardly curved under surfaces on the downwardly and outwardly inclined portions of the surface of ring 20, in the raised position of the latter, the under sides of the flanges being preferably curved somewhat upwardly and inwardly, as shown, with the result that lifting engagement of the ring with the flanges tends to shift the tops of the flanges outwardly. At the same time, the support of the weight of the plates along the outwardly spaced lines of the edges of the flanges tends to cause the bottoms of the plates to be swung outwardly by gravity, to the position shown in Fig. 5, with the result that the plates are separated and inclined in position to clear the mold sides and thus facilitate application to and removal from the mold. The ring 20 is pressed downwardly, thereby wedging the plates firmly against the mold sides, in which position they are securely retained by the frictional engagement of the ring with the plates, thereby providing the desired support for the mold body while bein fllled with molten metal. The construction and connection of the parts is of such a character as to minimize clogging by the molding sand or loam or particles of spilled metal. For transportation or storage in quantities, the jackets are readily collapsed substantially into a plane, as shown in Fig. 3, so that they can be stacked one upon another in minimum space.

It will thus be seen that the invention accomplishes its objects and while it has been herein disclosed by reference tothe details of a preferred embodiment, it is to be understood that such disclosure is intended in an illustrative, rather than a limiting sense, as it is contemplated that various modifications in the construction and arrangement of the parts will readily occur to those skilled in the art, within the spirit of the invention and the scope of the appended claims.

I claim:

1. A slip-on jacket for sand molds comprising plates for supporting engagement with the sides of said mold, connectors connecting adjacent ends of adjacent plates and having means affording bodily movement of said plates toward and from each other and also swinging movement of said plates about said connectors toward and from the sides of said mold and a ring embracing said plates and adjustable vertically thereon to press said plates into engagement with said mold, said plates having portions at the upper edges thereof inclined downwardly and outwardly for engagement by said ring, whereby said ring may be raised to engage said projecting portions and swing said plates to outwardly and downwardly inclined positions spaced from said mold sides, for applying and removing said jacket.

2. A slip-on jacket for sand molds comprising plates for supporting engagement with the sides of said mold having outwardly and downwardly inclined flanges adjacent the tops thereof connectors connecting the top portions of adjacent ends of adjacent plates and having means affording bodily movement of said plates toward and from each other and also swinging movement of said plates about said connectors toward and from the sides of said mold and a ring of circular cross-sectional shape embracing said plates and adjustable vertically thereon for clamping said plates against said mold, whereby said ring may be raised to engage said flanges and swing said plates to downwardly and outwardly inclined positions spaced from said mold sides, for applying and removing said jacket.

3. A slip-on jacket for sand molds comprising plates for supporting engagement with the mold sides, said plates having downwardly and outwardly inclined wedge surfaces thereon, connectors connecting the top portions of adjacent ends of adjacent plates and having means affording bodily movement of said plates toward and from each other and also swinging movement of said plates about said connectors toward and from the sides of said mold a ring embracing said plates and adjustable vertically thereon for wedging said plates into supporting engagement with said mold sides, said plates having outwardly and downwardly inclined flanges along the upper edges thereof, whereby said ring may be raised into engagement with said flanges and swing said plates to downwardly and outwardly inclined positions spaced from said mold sides, for applying and removing said jacket.

4. A slip-on jacket for sand molds comprising plates for supporting engagement with the mold sides, adjacent ends of adjacent plates being formed with alined sockets, an L-shaped pintle having its ends pivotally engaged in the sockets of each adjacent pair, respectively, for pivotally connecting said plates with one another, and a ring embracing said plates and adjustable vertically thereon for pressing said plates into supporting engagement with said mold sides.

ANDREW B. HENKEL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PA'I'ENTS Number Name Date 1,002,522 Kimball Sept. 5, 1911 1,101,160 Wood June 23, 1914 1,512,018 Frazer Oct. 21, 1924 1,983,581 Street Dec. 11, 1934 

